The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 1993
Filed:
Mar. 04, 1992
Jimmie R Williamson, Jr, Carrollton, TX (US);
Otis Engineering Corporation, Dallas, TX (US);
Abstract
A safety valve landing nipple selectively provides communication between a surface control line and the internal bore of said landing nipple by use of a rotary member. A rotary shifting tool is used to rotate the rotary member so that a cutting means shears the end of a shearable plug in the wall of the landing nipple, so as to provide communication between the surface control line and the internal bore of the landing nipple. A method of providing communication within a landing nipple between the surface control line and the internal bore of the landing nipple by use of the rotary shifting tool and a rotary shifting tool having a rotatable outer mandrel means, an inner mandrel means, a travel means and a diametrically retractable means.